High resolution dinoflagellate cyst record of environmental change in Effingham Inlet (British Columbia, Canada) over the last millennium

2016 ◽  
Vol 441 ◽  
pp. 787-810 ◽  
Author(s):  
Manuel Bringué ◽  
Vera Pospelova ◽  
Stephen E. Calvert ◽  
Randolph J. Enkin ◽  
Terri Lacourse ◽  
...  
Keyword(s):  
British Columbia ◽  
High Resolution ◽  
Environmental Change ◽  
Last Millennium ◽  
Dinoflagellate Cyst ◽  
Effingham Inlet

A new high-resolution radiocarbon Bayesian age model of the Holocene and Late Pleistocene from core MD02-2494 and others, Effingham Inlet, British Columbia, Canada; with an application to the paleoseismic event chronology of the Cascadia Subduction Zone

2013 ◽  
Vol 50 (7) ◽  
pp. 746-760 ◽  
Author(s):  
Randolph J. Enkin ◽  
Audrey Dallimore ◽  
Judith Baker ◽  
John R. Southon ◽  
Tara Ivanochko
Keyword(s):  
British Columbia ◽  
High Resolution ◽  
Subduction Zone ◽  
Laminated Sediments ◽  
Cascadia Subduction Zone ◽  
K Value ◽  
Radiocarbon Dates ◽  
Age Model ◽  
Annually Laminated Sediments ◽  
Effingham Inlet

Annually laminated sediments from the anoxic inner basin of Effingham Inlet, Pacific coast of Vancouver Island, British Columbia, Canada, yield a high-resolution 42 m paleoenvironmental record, from the present to about 14 ka 14C BP (17 ka cal BP). A new age model, based on 68 radiocarbon dates from twigs and small plant material, from the 40 m core MD02-2494 and 2 m freeze cores from the surface, is anchored by the Mazama Ash and varve counting. A Poisson-process sedimentation model is used, applying a new method to determine the Poisson k value, giving a realistic age model compatible with the multi-proxy core data. Twenty-one “seismites”, which are lithofacies in the Effingham cores that may be representative of seismically triggered mass-wasting events, are identified and dated precisely, then compared with the chronology of the deep-sea turbidite record farther south in the Cascadia Subduction Zone (CSZ), to determine if regional sediment disturbances can be identified. With 16 proposed correlations, Effingham seismite ages are 169 ± 206 years older than turbidite ages estimated largely by radiocarbon analysis of foraminifera in hemipelagic deposits.

scholarly journals High resolution integrated microbiostratigraphy of the Lower Jurassic (late Pliensbachian–early Toarcian) of central Italy

1998 ◽  
Vol 17 (2) ◽  
pp. 153-172 ◽  
Author(s):  
Raffaella Bucefalo Palliani ◽  
Emanuela Mattioli
Keyword(s):  
High Resolution ◽  
Evolutionary History ◽  
Central Italy ◽  
Lower Jurassic ◽  
High Potential ◽  
Calcareous Nannofossils ◽  
Calcareous Nannofossil ◽  
Dinoflagellate Cyst ◽  
History Of ◽  
Global Events

Abstract. The integrated use of calcareous nannofossil and dinoflagellate cyst events in a study of the late Pliensbachian–early Toarcian interval in central Italy has yielded a high resolution biostratigraphy. The use of both the first and last occurrences of selected taxa belonging to the two phytoplankton groups allows the dating of the sediments with a very refined detail, even when lithologies are unfavourable to the preservation of one fossil group. The evolutionary history of calcareous nannofossils and dinoflagellate cysts during the early Jurassic and its links with global events are responsible for the high potential of this integrated biostratigraphy.

scholarly journals Getting to green: Niche-driven or government-led entrepreneurship and sustainability in the wine industry

2011 ◽  
Vol 14 (1) ◽  
pp. 47-60 ◽  
Author(s):  
Lauretta Frederking
Keyword(s):  
British Columbia ◽  
Environmental Change ◽  
Environmental Values ◽  
Wine Industry ◽  
Niche Model ◽  
The Government ◽  
Sustainability Movement

Through the framework of Michael Porterʼs five forces, this article compares sustainability in the Oregon and British Columbia wine industries. After describing the contrasting characteristics of the green niche model and the government-led model of environmental change, the article analyzes the emerging challenges for each type of change.The distinct sources for profitability and future innovation suggests diversity within the sustainability movement and two very different processes of translating environmental values into entrepreneurial practice.

Coherent South American Monsoon Variability During the Last Millennium Revealed Through High‐Resolution Proxy Records

2019 ◽  
Vol 46 (14) ◽  
pp. 8261-8270 ◽  
Author(s):  
J. L. P. S. Campos ◽  
F. W. Cruz ◽  
T. Ambrizzi ◽  
M. Deininger ◽  
M. Vuille ◽  
...  
Keyword(s):  
High Resolution ◽  
South American ◽  
Last Millennium ◽  
South American Monsoon ◽  
Proxy Records ◽  
Monsoon Variability
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